Validation of a tagalog version of the EORTC PATSAT-C33 and EORTC OUT-PATSAT7 patient satisfaction questionnaires for patients with cancer undergoing outpatient radiotherapy.

190 Background: The satisfaction of cancer patients with their care significantly impacts their quality of life. Beyond specific cancer treatments, the delivery of care plays a vital role. Evaluating patient satisfaction with care is increasingly important in oncology due to the prolonged and intensive nature of cancer management. Discussions often focus on medical aspects, neglecting administrative and psychosocial concerns. Patient-centered care involves assessing satisfaction, which reflects perceived quality. Patient satisfaction is now recognized as a key indicator of care quality. Methods: The EORTC developed tools like PATSAT-C33 and OUT-PATSAT7 to assess satisfaction with cancer care. These instruments, translated into Tagalog using a “forward-backward” translation procedure in accordance with the EORTC QOL Study Group guidelines, were validated among Filipino cancer patients undergoing radiotherapy. The tools encompass dimensions like doctors' skills, information exchange, nurses' responsiveness, and care organization. They showed reliability and validity comparable to the original versions. Results: Construct, criterion, and factorial validity were assessed, indicating the tools measure intended constructs effectively. The multi-item scales of EORTC PATSAT-C33 and EORTC OUT-PATSAT7 have good to excellent internal consistency. A value between 0.8 - 0.9 represents good reliability, whereas a Cronbach alpha of≥0.9 represents excellent reliability. Criterion validity was confirmed by comparing them with a validated Filipino satisfaction scale. Each dimension identified in the original study applies to Filipino cancer patients, suggesting the tools' applicability across populations. Conclusions: Despite some demographic biases in the study sample, the translations proved valid and reliable. These Tagalog versions are recommended for use with native Tagalog-speaking Filipino cancer patients. Further studies with larger sample sizes may enhance reliability. [Table: see text]